import java.applet.*;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

import Acme.JPM.Encoders.GifEncoder;
import Acme.MainFrameModified;

public class SecondAppletViewer extends HttpServlet { 

  static final int WIDTH = 450;
  static final int HEIGHT = 320;
  static final String APPLETNAME = "SecondApplet";

  public void doGet(HttpServletRequest req, HttpServletResponse res)
                               throws ServletException, IOException {
    ServletOutputStream out = res.getOutputStream();

    MainFrameModified frame = null;
    Graphics g = null;
    Applet applet = null;

    try {
      // Load the SecondApplet
      // Must be in the standard CLASSPATH
      try {
        applet = (Applet) Class.forName(APPLETNAME).newInstance();
      }
      catch (Exception e) { 
        throw new ServletException("Could not load applet:" + e);
      }
  
      // Prepare the applet arguments
      String args[] = new String[1];
      args[0] = "barebones=true";  // run without a menu bar

      // Put the applet in its frame
      // addNotify() is called by MainFrameModified
      frame = new MainFrameModified(applet, args, WIDTH, HEIGHT);
  
      // Get a graphics region to match the applet size, using the Frame
      Image image = frame.createImage(WIDTH, HEIGHT);
      g = image.getGraphics();

      // Ask the applet to paint itself
      applet.validate();
      applet.paint(g);
  
      // Encode and return what it painted
      res.setContentType("image/gif");
      GifEncoder encoder = new GifEncoder(image, out);
      encoder.encode();
    }
    finally {
      // Clean up resources
      if (applet != null) {
        applet.stop();
        applet.destroy();
        applet.removeAll();
      }
      if (g != null) {
        g.dispose();
      }
      if (frame != null) {
        frame.removeAll();
        frame.removeNotify();
        frame.dispose();
      }
    }
  }
}